Camera diaphragm unit



FIG. 1 is a top, front perspective view of a camera diaphragm unitshowing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

The ornamental design for a camera diaphragm unit, as shown.